| 摘要 |
<p>A method and apparatus for editing continuous tone digital images representing pixels in which regions containing defects, called "defect regions", are unnoticeable or less visually discernible. Corrected pixel data for pixels in the defect region, called defect pixels, in the digital image are provided while data representing non-defect pixels outside of the defect region are not altered. These digital images may have one color channel (gray side) or multiple color channels. The apparatus and method includes a computer system which operates according to a set of instructions for providing the steps of: Selecting one of the defect pixels in the defect region, and then allocating a plurality of line segment, through the selected defect pixel, wherein each line segment is composed of pixels in the image about the selected defect pixel. Next, representative models are determined for the non-defect pixels of each line segment. A deviation is determined of the non-defect pixels along each line segment from their models. The line segment is selected having the lowest deviation, and then corrected values of the selected defect pixel are calculated based on the values of at least two non-defect pixels in the selected line segment on either side of the selected defect pixel. In another embodiment, the corrected values of the selected defect pixel are based on intermediate values for the selected defect pixel which are calculated for each line segment, and which contribute to the corrected values relative to calculated weights based on the deviations for the line segments. Each pixel in the digital image is successively scanned, and the selecting of the defect pixels occurs while the image is being scanned. A corrected image is outputted containing the non-defect values in the digital image and the corrected pixel values for defect pixels in the defect region. <IMAGE></p> |
